216 DR. G. J. HINDE. 



Nonionina{fj, Ghhigcrma, Caqicnteria, Pnli/frfiiia miniacfmn, P. pkimmi, and llcfi'm^fniriKt. Fragment of 

 Pocillopom, showing dark fibrous structure. Echinid spine. Lithothamnion. 



The samples from 300 to 310 feet are of a fairly hard white rock, with but few organisms to be seen 

 with a lens; Ainphislnjina, alcyonarian spicules, fragments of polyzoa. A sample from 302 feet contained 

 one or two pieces of perforate coral, Porifrs (1). 



The fragments from 310 to 320 feet are of hard whitish rock similar to the preceding, with Aiiqiliisfifiviut 

 Lf'xsonii abundant, and Orbifolifex. Casts of Pocilhipora, fragment of iHilh'jxint, alcyonarian spicules. 

 Echinid spines, polyzoa, Bainlia (rare). 



From 320 to 330 feet. The samples of powdered materials are still of white rock with the same kinds of 

 organisms. A thin section [841] of some fine material fiom 325 feet contained Aiitjiliisli'ijiiui, Carpciitrria, 

 Poh/freina iinniaccuiiu and Lifliofhainnion. Parilhipom casts, alcj'onarian spicules. 



Depth from Surface, 330-373 /ee^; Distance Bored, AS feet; Total Length of Core 



Obtained, 0. 



In this 43 feet of the boring no solid cores were brought up; the only 

 samples of the rocks passed througli are the more or less fine, crushed, fragments 

 produced by the action of the drill. This fragmental and powdery material is generally 

 similar to the preceding. It consists of a fairly hard whitish or cream-tinted limestone 

 with numerous foraminifera and pieces of casts of corals, which are distinctly more 

 abundant than in the samples from the pieceding 50 feet. Of the corals, Focillopora 

 is most frequently met with ; casts of pieces of perforate coral, probably Pontes, are 

 also common, and a single fragment of a cast of a meandriform coral, (?) Cceloria was 

 also noted. The foraminifera usually become detached from the matrix in the 

 crushing of the rock, their surfaces are rough and have lost the polish of recent 

 specimens. The most abundant form is Amphisteyina Lessonii, other genera 

 represented are Orbitolites, Bolivina, Discorhina, Glohigerina, Anomalina, Carpenteiia, 

 Polytrema, Tinoporus, and Calcarivia. Ther-e are also echinid spines, polyzoa, 

 entomostraca, and Halimeda. 



Details. 



From 330 to 340 feet. Somewhat coarse fragmental material, with casts of I'licUhqidiv and i)eiforatc 

 corals. The foraminifera include Polmiui, Calmrina, and Aiiiji/iist/'ijiiKi. Fragments of lamellibranchiate 

 shell, polyzoa, echinid spines, Haluncda joints. 



From 340 to 350 feet. Fine mateiial intermingled with coarser angular fragments about 5 millims. in 

 length. Fragments of Pocilhjx/ni and pieces of perforate corals. Porifcs (?), numerous. Cast of piece of 

 meandriform coral, Ccelwia (?). A microscopic section [842] was made from some of the coarser fragments 

 of the white rock brought up from 350 feet ; they consisted of pieces of coral showing the fibrous 

 structure, Nnbecidaria {1), Glohiycrina, Carjjtrifma, PoJi/f'/rma, and Amjilnstcgina ; pieces of fine-grained 

 sediment, with fragments of foraminifera, echinid plates, and joints of Haliincila, in a matrix of calcite. 



From 350 to 360 feet. Samples of the same kind of rock fragments as the preceding, with fragments 

 of Podllopora and perforate corals ; Aniphidcciina, echinid spines, IIuHuicda. 



From 360 to 370 feet. Materials for the most part fine, with occasional larger chips of the white rock. 

 In addition to the pieces of Pocillopom and perforate corals, there are spicules of alcyonaria, with their 

 tubercles partially decayed and powdery ; fragments of polyzoa, Bainlia, claws of small crustaceans. 

 AnqiJmfcgma very cnmnioji, Anomalhia, Llsrurbina, and Cah'urina. 



